Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\yhe.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '<SYSTEM32>\ctfmon.exe'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DisableNotifications' = '00000001'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'
To complicate detection of its presence in the operating system,
blocks the following features:
- Windows Security Center
Creates and executes the following:
- '<LS_APPDATA>\yhe.exe' -gav <Full path to virus>
Terminates or attempts to terminate
the following user processes:
- safari.exe
- opera.exe
- chrome.exe
- iexplore.exe
- firefox.exe
Modifies file system :
Creates the following files:
- %TEMP%\7y6774w28t81a
- %HOMEPATH%\Templates\7y6774w28t81a
- %ALLUSERSPROFILE%\Application Data\7y6774w28t81a
- <LS_APPDATA>\yhe.exe
- <LS_APPDATA>\7y6774w28t81a
Deletes itself.
Network activity:
Connects to:
- 'ni###ocyri.com':80
- 'jy####vunevu.com':80
- 'vy####lorabik.com':80
- 'pi####vunawewo.com':80
- 'na###ijywar.com':80
- 'ci####kypomow.com':80
- 'ne###epazew.com':80
UDP:
- DNS ASK hi###odupi.com
- DNS ASK fo####pacytucy.com
- DNS ASK ro####xyzabihy.com
- DNS ASK ko###uwobow.com
- DNS ASK ry####komecig.com
- DNS ASK dy####pinynyx.com
- DNS ASK ko####qoxuri.com
- DNS ASK so####kesylafy.com
- DNS ASK we###inymu.com
- DNS ASK wo####dabati.com
- DNS ASK hy####vywuge.com
- DNS ASK po###ajimaq.com
- DNS ASK co####hulyqedy.com
- DNS ASK microsoft.com
- DNS ASK qy###isope.com
- DNS ASK hi###yragap.com
- DNS ASK py###enena.com
- DNS ASK qe###ehuh.com
- DNS ASK vy####lorabik.com
- DNS ASK jy####vunevu.com
- DNS ASK se####qufikeg.com
- DNS ASK fe###ixypo.com
- DNS ASK ni###ocyri.com
- DNS ASK ci####kypomow.com
- DNS ASK na###ijywar.com
- DNS ASK pi####vunawewo.com
- DNS ASK ne###epazew.com
- DNS ASK li###okyfo.com
- DNS ASK ji####ramukiw.com
- DNS ASK ke####fotacafo.com
- DNS ASK za####zykubo.com
- DNS ASK to###apah.com
- DNS ASK qu###icyz.com
- DNS ASK xo####fanace.com
- DNS ASK pu####gapyhi.com
- DNS ASK so####kuqulec.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: 'msascui_class' WindowName: '(null)'
